Cited by 116Protein Kinase Regulation and GTPase SignalingProtein Tyrosine PhosphatasesImmunodeficiency and Autoimmune Disorders

Dysfunction of phospholipase Cγ in immune disorders and cancer

Koss, Hans, Bunney, Tom D., Behjati, Sam, Katan, Matilda·2014·Trends in Biochemical Sciences

Abstract

The surge in genetic and genomic investigations over the past 5 years has resulted in many discoveries of causative variants relevant to disease pathophysiology. Although phospholipase C (PLC) enzymes have long been recognized as important components in intracellular signal transmission, it is only recently that this approach highlighted their role in disease development through gain-of-function mutations. In this review we describe the new findings that link the PLCγ family to immune disorders and cancer, and illustrate further efforts to elucidate the molecular mechanisms that underpin their dysfunction.

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Registry

Crossref · 10.1016/j.tibs.2014.09.004

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  • The protective variant P522R is located within a region of the enzyme that has a regulatory function.

    “The protective variant P522R is certainly located within a region of the enzyme that has a regulatory function (Fig. 4d, [7])”

    From Alzheimer’s disease phospholipase C-gamma-2 (PLCG2) protective variant is a functional hypermorph (2019) · cites this paper as [7]

    Box 1 (p. 17) describes the PLCγ-specific array as involved in interactions with regulatory proteins, and the Figures (p. 16) describe regulatory interactions involving its domains. Our copy does not mention P522R or locate that variant within the array, so it supports the region’s regulatory role but not the claimed location of P522R. (LLM, conf=0.78)

    Experimental — accuracy not yet measured
  • Aberrant functions of different PLCs and PI3Ks in disease development are well established.

    “Although not covered in this review, the importance of aberrant functions of different PLCs and PI3Ks in disease development is well established and continues to expand [11,62,67,72,134–138].”

    From Phosphatidylinositol(4,5)bisphosphate: diverse functions at the plasma membrane (2020) · cites this paper as [137]

    The section “Mutations in PLCγ enzymes and disease development” (p. 3) links aberrant PLCγ function to immune disorders and cancer, supporting the PLC portion of the claim. The paper does not substantiate the claim about PI3Ks in disease development; its focus is PLCγ enzymes. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • PLCγ2 is a main effector downstream of TREM2 and is an intracellular lipase recruited to the membrane upon activation.

    “A main effector downstream of TREM2, PLCγ2 is an intracellular lipase recruited to the membrane upon activation [3, 4].”

    From TREM2/PLCγ2 signalling in immune cells: function, structural insight, and potential therapeutic modulation (2021) · cites this paper as [3]

    The introduction (p. 2) describes PLCγ2 as a signaling enzyme activated by immune-cell receptors, and Box 1 (p. 18) describes its recruitment to a signaling scaffold and activation as a phospholipase. The cited passages do not identify TREM2 as an upstream receptor or establish PLCγ2 as a main effector downstream of it. Box 1 says Btk—not PLCγ2—is recruited to the membrane environment, so the specific membrane-recruitment claim is not established here. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • The majority of hypermorphic variants (S707Y, Y495C, D993G) have been identified in the context of APLAID disorders, and in some mouse models with autoinflammatory phenotypes.

    “the majority of hypermorphic variants (S707Y, Y495C, D993G) have been identified in the context of APLAID disorders, and in some mouse models with autoinflammatory phenotypes [3, 109, 110]”

    From TREM2/PLCγ2 signalling in immune cells: function, structural insight, and potential therapeutic modulation (2021) · cites this paper as [3]

    The immune-diseases section (pp. 3–4) identifies S707Y in APLAID and describes gain-of-function PLCγ2 mutations in autoinflammatory mouse strains. The structural section (pp. 8–9) places Y495C in ALI14 mice; the table (p. 20) lists D993G in ALI5 mice, although the main text calls that substitution D993L. The copy does not establish that a majority of hypermorphic variants occur in these contexts, and it does not place Y495C or D993G in APLAID patients. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • PLCγ2 is present in circulating monocytes, platelets and B-cells, amongst other immune cells.

    “PLCγ2 is present in circulating monocytes, platelets and B-cells, amongst other immune cells (see sections above, [3, 130])”

    From TREM2/PLCγ2 signalling in immune cells: function, structural insight, and potential therapeutic modulation (2021) · cites this paper as [3]

    The introduction (p. 2) says PLCγ2 is predominantly expressed in haematopoietic cells and is activated by B-cell receptors, supporting the B-cell and broader immune-cell portions of the claim. Our copy does not specifically establish its presence in circulating monocytes or platelets; the platelet mention found in the references (p. 14) concerns a PLC inhibitor, not PLCγ2 expression. (LLM, conf=0.84)

    Experimental — accuracy not yet measured

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Authors
Koss, H., Bunney, T. D., Behjati, S., & Katan, M.
Affiliations
  • Institute of Structural and Molecular Biology (GB)
  • Wellcome Sanger Institute (GB)
Corresponding author
  • Bunney, Tom D.
  • Katan, Matilda
Venue
Trends in Biochemical Sciences
Publisher
Elsevier BV
Published
2014-12
Volume
39
Issue
12
Pages
603-611
ISSN
0968-0004 (ISSN-L)
OpenAlex
W2090368019
Cited by
115
References
57
Citations by year
2026: 1 · 2025: 7 · 2024: 6 · 2023: 17 · 2022: 14 · 2021: 13 · 2020: 20 · 2019: 12 · 2018: 5 · 2017: 6 · 2016: 6 · 2015: 8
FWCI
0.63
Type
journal article
Language
en
Open access
closed
Locations
  • Trends in Biochemical Sciences (publishedVersion)
  • PubMed (publishedVersion)
  • UCL Discovery (University College London) (submittedVersion)
Funders
  • Wellcome Trust
  • Cancer Research UK (16567)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Tyrosine Phosphatases
  • Life Sciences › Immunology and Microbiology › Immunology › Immunodeficiency and Autoimmune Disorders
Keywords
phospholipase C-gamma, immune disorders, cancer, gain-of-function mutations, intracellular signaling, disease pathophysiology, genetic variants
MeSH terms
Animals, Diglycerides, Humans, Immune System Diseases, Models, Biological, Models, Molecular, Mutation, Neoplasms, Protein Conformation, Second Messenger Systems, Inositol 1,4,5-Trisphosphate, Phospholipase C gamma

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