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Birds lose factor XII. Pufferfish Lamprey Zebrafish E. shark Mouse Lizard Hagfish Frog Human Chicken Platypus Sea Squirt Duplication leads to separate factor XI and prekallikrein. Amphioxus First appearance of prekallikrein. First appearance of factor XII. Block duplication leads to factors VIII and IX. Did anything happen here? Period of invention. The step-by-step evolution of vertebrate blood coagulation Dr. Russell F. Doolittle UC San Diego a talk given on Jan 29, 2010 at California State University Fresno Bernstein and Kairinen (1971) R. Williams, 1980 Blood clotting in humans is very complex. It involves more than two dozen genetically encoded proteins. XI TFI tissue factor XIIa Kallikrein X VII XIa TF/fVII ProtS IXa VIIIa APC (HMWK) Prekallikrein IX VIII V ProtC Plasminogen XIII Thrombomodulin Xa Prothrombin Pro-u-PA PAI-1 Va t-PA Thrombin Antithrombin Fibrinogen XII XIIIa TAFI Fibrin Monomer Fibrin u-PA α -Antiplasmin 2 Plasmin Cross-linked Fibrin Lysed Fibrin Mammalian blood clotting can be divided into sets of reactions. Thrombin Fibrinogen Fibrin Monomer Fibrin XIII Prothrombin Thrombin XIIIa Fibrinogen Fibrin Monomer Fibrin Cross-linked Fibrin tissue factor X VII TF/fVII IXa Va VIIIa V IX VIII XIII Xa Prothrombin Thrombin XIIIa Fibrinogen Fibrin Monomer Fibrin Cross-linked Fibrin tissue factor X VII XII Kallikrein TF/fVII IXa Va (HMWK) Prekallikrein XIIa VIIIa V IX VIII XIII Xa Prothrombin Thrombin XIIIa Fibrinogen Fibrin Monomer Fibrin Cross-linked Fibrin tissue factor X VII XII Kallikrein TF/fVII IXa Va (HMWK) Prekallikrein XIIa VIIIa V IX VIII Plasminogen XIII Pro-u-PA Xa Prothrombin t-PA Thrombin XIIIa Fibrinogen Fibrin Monomer Fibrin u-PA Plasmin Cross-linked Fibrin tissue factor X VII XII Kallikrein TF/fVII IXa Va (HMWK) Prekallikrein XIIa VIIIa V IX VIII Plasminogen XIII Pro-u-PA Xa Prothrombin t-PA Thrombin XIIIa Fibrinogen Fibrin Monomer Fibrin u-PA Plasmin Cross-linked Fibrin Lysed Fibrin PAI-1 prekallikrein factor VII factor XIII factor XII factor XI factor VIII factor V factor IX factor X tissue factor fibrinogen thrombin gelation The Delicate Balance protein S thrombomodulin tissue factor inhibitor u-PA t-PA plasminogen antithrombin3 protein C fibrin fluidity It is well established that: It is well established that: Thrombin-clottable fibrinogen is found in all vertebrate animals, but not in protochordates (amphioxus, tunicates, etc.) or invertebrate animals. It is well established that: Thrombin-clottable fibrinogen is found in all vertebrate animals, but not in protochordates (amphioxus, tunicates, etc.) or invertebrate animals. The earliest diverging vertebrates (lampreys and hagfish) have six-chained, fully differentiated fibrinogens that polymerize and cross-link the same as mammalian ones. It is well established that: Thrombin-clottable fibrinogen is found in all vertebrate animals, but not in protochordates (amphioxus, tunicates, etc.) or invertebrate animals. The earliest diverging vertebrates (lampreys and hagfish) have six-chained, fully differentiated fibrinogens that polymerize and cross-link the same as mammalian ones. Vitamin-K dependent factors play a role in the clotting of lower vertebrates like the lamprey and hagfish. It is well established that: Thrombin-clottable fibrinogen is found in all vertebrate animals, but not in protochordates (amphioxus, tunicates, etc.) or invertebrate animals. The earliest diverging vertebrates (lampreys and hagfish) have six-chained, fully differentiated fibrinogens that polymerize and cross-link the same as mammalian ones. Vitamin-K dependent factors play a role in the clotting of lower vertebrates like the lamprey and hagfish. It was long ago predicted that some factors would not play a role in the clotting of lower vertebrates. The evolution of vertebrate blood coagulation: a case of Yin and Yang Doolittle R. F. (1993) Thromb Haemost. 70:24-28. How did blood clotting become so complex? How did blood clotting become so complex? Why is it so complex? How did blood clotting become so complex? Why is it so complex? How can we find out? How did blood clotting become so complex? Why is it so complex? How can we find out? We can start to answer these questions by examining clotting in more primitive creatures. Five Animal Groups with Different Types of Blood Clotting Protostomes Insecta Crustacea Deuterostomes Arachnida Echinodermata (Protochordata) Vertebrata Five Animal Groups with Different Types of Blood Clotting Protostomes Insecta Crustacea Deuterostomes Arachnida Echinodermata (Protochordata) Vertebrata Pufferfish Lamprey Zebrafish E. shark Hagfish Mouse Lizard Human Chicken Platypus Frog (70 mya) Sea Squirt Amphioxus (310 mya) (380 mya) (430 mya) (500 mya) (550 mya) Many of the clotting proteins are multi-domained and involve various combinations of common domains. P F1 PAN FN1 G GLA K Kringle F2 E FN2 EGF G SP K K Serine protease SP P K K K Prothrombin G E E E F1 E Factor XII Carboxypep FRED TG CP- A Discoidin Serpin Kunitz Sushi cc K SP Plasminogen SP Protein C, factor VII. Factor IX, Factor X F2 K FN3 K SP F1 E K K SP t-PA F1 K u-PA SP Vitamin-K Dependent Factors (GLA-containing) TBHU TBBO TBFU F9HU F9BO Factors IX F9FUA F9FUB F10BO F10HU Factors X F10FU F7HU F7BO Factors VII F7FUB F7FUA F7FUC PCBO PCHU Proteins C PCFU * * * * * Gene duplication Thrombins HU = human BO = bovine FU = puffer fish Today it is possible to find out what clotting factors a creature has by computer searching of whole genome databases. Today it is possible to find out what clotting factors a creature has by computer searching of whole genome databases. Whole genome databases are available for many vertebrates, including human, other mammals, opossum, platypus, chicken Lizard, frog, and several fish. A draft genome is available for lamprey. Today it is possible to find out what clotting factors a creature has by computer searching of whole genome databases. Whole genome databases are available for many vertebrates, including human, other mammals, opossum, platypus, chicken Lizard, frog, and several fish. A draft genome is available for lamprey. But not the hagfish. Today it is possible to find out what clotting factors a creature has by computer searching of whole genome databases. Whole genome databases are available for many vertebrates, including human, other mammals, opossum, platypus, chicken Lizard, frog, and several fish. A draft genome is available for lamprey. But not the hagfish. My students and I have been scouring the lamprey data base, as well as those other vertebrates listed above. Human Blood Clotting tissue factor X VII TF/fVII IXa Va VIIIa V IX VIII Plasminogen XIII Pro-u-PA Xa Prothrombin t-PA Thrombin XIIIa Fibrinogen Fibrin Monomer Fibrin u-PA Plasmin Cross-linked Fibrin Lysed Fibrin tissue factor X VII TF/fVII IXa Va VIIIa V missing in lamprey IX VIII Plasminogen XIII Pro-u-PA Xa Prothrombin t-PA Thrombin XIIIa Fibrinogen Fibrin Monomer Fibrin u-PA Plasmin Cross-linked Fibrin Lysed Fibrin Lamprey System tissue factor X VII TF/fVII Va V Plasminogen XIII Pro-u-PA Xa Prothrombin t-PA Thrombin XIIIa Fibrinogen Fibrin Monomer Fibrin u-PA Plasmin Cross-linked Fibrin Lysed Fibrin Lampreys have a simpler clotting system than other vertebrates. Lampreys have a simpler clotting system than other vertebrates. (We’re anxious to find out what the hagfish has!) All fish have a simpler clotting system than tetrapods. All fish have a simpler clotting system than tetrapods. In particular, they lack the “contact phase” factors. The Contact System Proteases prekallikrein XIIa α-kallikrein factor XII factor XI factor XIIa factor X factor XIa factor IX factor IXa factor Xa prothrombin thrombin E F1 E K SP u-PA K K SP t-PA F2 E F1 E K SP factor XII E F1 E K SP HGFA K K K K K SP K K K K SP HGF SP PK F2 P P P P P P P P P P SP plasminogen factor XI Without exception, all of the proteins involved in mammalian blood clotting are descended from other protein families that are not involved in clotting. Without exception, all of the proteins involved in mammalian blood clotting are descended from other protein families that are not involved in clotting. The backbone of clotting, like many other extracellular processes, is limited proteolysis, especially employing serine proteases. Hundreds of serine proteases--all evolutionarily related--are found in animals. Without exception, all of the proteins involved in mammalian blood clotting are descended from other protein families that are not involved in clotting. The backbone of clotting, like many other extracellular processes, is limited proteolysis, especially employing serine proteases. Hundreds of serine proteases--all evolutionarily related--are found in animals. There is also a full complement of serine protease inhibitors, members of a widely spread family called “serpins.” Without exception, all of the proteins involved in mammalian blood clotting are descended from other protein families that are not involved in clotting. The backbone of clotting, like many other extracellular processes, is limited proteolysis, especially employing serine proteases. Hundreds of serine proteases--all evolutionarily related--are found in animals. There is also a full complement of serine protease inhibitors, members of a widely spread family called “serpins.” Factor V (or factor 5) and factor VIII (factor 8) are descended from ferroxidase enzymes that can be traced back to bacteria. Without exception, all of the proteins involved in mammalian blood clotting are descended from other protein families that are not involved in clotting. The backbone of clotting, like many other extracellular processes, is limited proteolysis, especially employing serine proteases. Hundreds of serine proteases--all evolutionarily related--are found in animals. There is also a full complement of serine protease inhibitors, members of a widely spread family called “serpins.” Factor V (or factor 5) and factor VIII (factor 8) are descended from ferroxidase enzymes that can be traced back to bacteria. Fibrinogen is a multi-domain protein, the globular portions of which have numerous relatives throughout the animal kingdom. Occurrence of Genes for Contact Phase Proteases and Some Paralogs Factor XI Human Opossum Platypus Chicken Green Lizard Frog Zebra Fish Puffer Fish Lamprey Yes Yes No No No No No No No Prekallikrein Factor XII Yes Yes Yes Yes Yes Yes No No No Yes Yes Yes No Yes Yes No No No HGFA HGF Plasminogen t-PA Yes Yes Yes Yes Yes Yes ? Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Updated from Ponczek, Gailani & Doolittle, 2008 Chromosomal locations of factor XII and HGFA Jawless Fish Fish Amphibians Reptiles Birds Mammals monotremes marsupials eutherians 4 3 1 2 1,2,3 = gene duplications 4 = gene deletion Updated from Ponczek, Gailani & Doolittle, 2008 Chromosomal locations of prekallikrein and factor XI Pufferfish Lamprey Hagfish Sea Squirt Amphioxus E. shark Zebrafish Mouse Lizard Frog Chicken Platypus Human Pufferfish Lamprey Zebrafish E. shark Hagfish Mouse Lizard Frog Sea Squirt Amphioxus Period of invention. Chicken Platypus Human Pufferfish Lamprey Zebrafish E. shark Mouse Lizard Hagfish Chicken Frog Sea Squirt Amphioxus Did anything happen here? Period of invention. Platypus Human Pufferfish Lamprey Zebrafish E. shark Mouse Lizard Hagfish Frog Human Chicken Platypus Sea Squirt Amphioxus Block duplication leads to factors VIII and IX. Did anything happen here? Period of invention. Pufferfish Lamprey Zebrafish E. shark Mouse Lizard Hagfish Frog Human Chicken Platypus Sea Squirt Amphioxus First appearance of factor XII. Block duplication leads to factors VIII and IX. Did anything happen here? Period of invention. Pufferfish Lamprey Zebrafish E. shark Mouse Lizard Hagfish Frog Human Chicken Platypus Sea Squirt Amphioxus First appearance of prekallikrein. First appearance of factor XII. Block duplication leads to factors VIII and IX. Did anything happen here? Period of invention. Pufferfish Lamprey Zebrafish E. shark Mouse Lizard Hagfish Frog Human Chicken Platypus Sea Squirt Duplication leads to separate factor XI and prekallikrein. Amphioxus First appearance of prekallikrein. First appearance of factor XII. Block duplication leads to factors VIII and IX. Did anything happen here? Period of invention. Birds lose factor XII. Pufferfish Lamprey Zebrafish E. shark Mouse Lizard Hagfish Frog Human Chicken Platypus Sea Squirt Duplication leads to separate factor XI and prekallikrein. Amphioxus First appearance of prekallikrein. First appearance of factor XII. Block duplication leads to factors VIII and IX. Did anything happen here? Period of invention. In the amphioxus genome: Lots of genes for fibrinogen-related domains (FREDs), but none for multi-domained fibrinogen. Some genes for proteases with sequences that resemble thrombin or factor X, but no domainal arrangements that correspond to these factors.. There is a gene for a tranglutaminase that is 39% identical with factor XIII, but it lacks a thrombin-activation site. A similar situation exists in sea squirt. In the amphioxus genome: Lots of genes for fibrinogen-related domains (FREDs), but none for multi-domained fibrinogen. Some genes for proteases with sequences that resemble thrombin or factor X, but no domainal arrangements that correspond to these factors.. There is a gene for a tranglutaminase that is 39% identical with factor XIII, but it lacks a thrombin-activation site. A similar situation exists in sea squirt. There are no bona fide clotting factor genes in the protochordate genomes . P K K K K P K SP P F1 G K K SP HGF 4-Kringle Protease K K K E K K K P K K K K K SP Plasminogen +4 P G K K SP F1 E K Prothrombin E K G E E K -5 K SP t-PA E F2 K P E E Protein C, factor VII. Factor IX, Factor X F2 E F1 E F1 Factor XII or HGFA K SP E P P SP Prekallikrein, Factor XI K SP P K E K SP u-PA Updated from Jiang & Doolittle, 2003 Summary Genomic sequence data are making it possible to reconstruct the individual events that have led to the complex system of blood clotting observed in mammals. Summary Genomic sequence data are making it possible to reconstruct the individual events that have led to the complex system of blood clotting observed in mammals. The raw material for all the many proteins involved in blood clotting was available in the form of domains in the common ancestor of vertebrates and protochordates. Summary Genomic sequence data are making it possible to reconstruct the individual events that have led to the complex system of blood clotting observed in mammals. The raw material for all the many proteins involved in blood clotting was available in the form of domains in the common ancestor of vertebrates and protochordates. The number of components increases as one moves up the evolutionary scale from the jawless fish to mammals. Even among mammals some recently evolved features are apparent. Summary Genomic sequence data are making it possible to reconstruct the individual events that have led to the complex system of blood clotting observed in mammals. The raw material for all the many proteins involved in blood clotting was available in the form of domains in the common ancestor of vertebrates and protochordates. The number of components increases as one moves up the evolutionary scale from the jawless fish to mammals. Even among mammals some recently evolved features are apparent. Reasonable scenarios can be presented that show a step-by-step development of the process. Whole genome duplications may have played a role in expanding the inventory of similar proteins. Acknowledgements Yong Jiang Michel Ponczek Justin Nand Sung Hong Da-Fei Feng David Gailani (Vanderbilt) My friend, the lamprey (Petromyzon marinus) MA FA MB MB FB MA LB LA Species diverge Gene Duplication Time Species diverge Gene Duplication Newmarket, New Hampshire, May, 1962 G F1 F2 E K PAN GLA FN1 FN2 EGF Kringle G K P K SP P K SP K Prothrombin G E E E F1 K K K SP Plasminogen SP F1 Protein C, factor VII. Factor IX, Factor X F2 Serine protease E Factor XII K E K K SP t-PA SP F1 K u-PA SP thrombin fibrinogen -------------> fibrin + fibrinopeptides prothrombin thrombin fibrinogen -------------> fibrin + fibrinopeptides prothrombin thrombin fibrinogen -------------> fibrin + fibrinopeptides factor XIIIa fibrin ----------------> cross-linked fibrin prothrombin thrombin fibrinogen -------------> fibrin + fibrinopeptides factor XIIIa fibrin ----------------> cross-linked fibrin plasmin lysed fibrin (fragments D and E, etc.) prothrombin thrombin fibrinogen -------------> fibrin + fibrinopeptides factor XIIIa fibrin ----------------> cross-linked fibrin plasmin lysed fibrin (fragments D and E, etc.) t-PA plasminogen ------------> plasmin prothrombin thrombin fibrinogen -------------> fibrin + fibrinopeptides factor XIIIa fibrin ----------------> cross-linked fibrin plasmin lysed fibrin (fragments D and E, etc.) t-PA plasminogen ------------> plasmin fibrin inactive t-PA -----------------> active t-PA A Simple System (n = 2 plus cells) (tissue factor, prothrombin, thrombocytes) tissue factor “thrombocytes” (pro)thrombin thrombin cell clot G K K SP (pro)thrombin A Simple System (n = 2 plus cells) (tissue factor, prothrombin, thrombocytes) tissue factor “thrombocytes” (pro)thrombin thrombin cell clot G K K SP (pro)thrombin This can’t be! Prothrombin has kringles; Tissue factor interacts with EGF domains. A Simple System (n = 2 plus cells) (tissue factor, prothrombin, thrombocytes) tissue factor “thrombocytes” (pro)thrombin thrombin cell clot G K K SP This can’t be! Prothrombin has kringles; Tissue factor interacts with EGF domains. (pro)thrombin Unless prothrombin originally had EGF domains! Another Simple System (n = 3) (tissue factor, prothrombin, fibrinogen) tissue factor fibrinogen (pro)thrombin thrombin fibrin G K K SP (pro)thrombin Another Simple System (n = 3) (tissue factor, prothrombin, fibrinogen) tissue factor fibrinogen (pro)thrombin thrombin fibrin G K K SP (pro)thrombin This can’t be! Prothrombin has kringles. Tissue factor interacts with EGF domains. Another Simple System (n = 3) (tissue factor, prothrombin, fibrinogen) tissue factor fibrinogen (pro)thrombin thrombin fibrin G K K SP This can’t be! Prothrombin has kringles. Tissue factor interacts with EGF domains. (pro)thrombin Unless prothrombin originally had EGF domains! Lamprey Pufferfish Zebrafish Dogfish Hagfish Mouse Lizard Human Chicken Frog (70 mya) Amphioxus Sea Squirt (310 mya) (380 mya) (400 mya) (500 mya) (540 mya) Hemoglobins α β primates Million Years -200 -400 jawed fishes jawless fishes -600 invertebrates -800 First Appearance myoglobin VII VII V TF TF X P VIIa X IX Xa fibrinogen Va Xa T T T IXa VIIIa Va V T VIIa fibrin P VIII fibrinogen T fibrin Lamprey Other Vertebrates VII VII V TF TF X P VIIa X IX Xa fibrinogen Va fibrin fibrinogen Xa T T T IXa VIIIa Va V T VIIa P VIII T fibrin Lamprey Other Vertebrates The simultaneous doubling of two interacting gene products is consistent with the 2R hypothesis. VII VII V TF T VIIa X V TF T P VIIa Va Va X Xa Xa IXa VIIIa T * IX VIII T T fibrinogen Lamprey P fibrin fibrinogen fibrin Other Vertebrates