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Williams LM, Fuess LE, Brennan JJ, Mansfield KM, Salas-Rodriguez E, Welsh J, Awtry J, Banic S, Chacko C, Chezian A, Dowers D, Estrada F, Hsieh YH, Kang J, Li W, Malchiodi Z, Malinowski J, Matuszak S, McTigue T, Mueller D, Nguyen B, Nguyen M, Nguyen P, Nguyen S, Njoku N, Patel K, Pellegrini W, Pliakas T, Qadir D, Ryan E, Schiffer A, Thiel A, Yunes SA, Spilios KE, Pinzón C JH, Mydlarz LD, Gilmore TD. A conserved Toll-like receptor-to-NF-κB signaling pathway in the endangered coral Orbicella faveolata. Dev Comp Immunol 2018; 79:128-136. [PMID: 29080785 DOI: 10.1016/j.dci.2017.10.016] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2017] [Revised: 10/23/2017] [Accepted: 10/24/2017] [Indexed: 06/07/2023]
Abstract
Herein, we characterize the Toll-like receptor (TLR)-to-NF-κB innate immune pathway of Orbicella faveolata (Of), which is an ecologically important, disease-susceptible, reef-building coral. As compared to human TLRs, the intracellular TIR domain of Of-TLR is most similar to TLR4, and it can interact in vitro with the human TLR4 adapter MYD88. Treatment of O. faveolata tissue with lipopolysaccharide, a ligand for mammalian TLR4, resulted in gene expression changes consistent with NF-κB pathway mobilization. Biochemical and cell-based assays revealed that Of-NF-κB resembles the mammalian non-canonical NF-κB protein p100 in that C-terminal truncation results in translocation of Of-NF-κB to the nucleus and increases its DNA-binding and transcriptional activation activities. Moreover, human IκB kinase (IKK) and Of-IKK can both phosphorylate conserved residues in Of-NF-κB in vitro and induce C-terminal processing of Of-NF-κB in vivo. These results are the first characterization of TLR-to-NF-κB signaling proteins in an endangered coral, and suggest that these corals have conserved innate immune pathways.
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Affiliation(s)
- Leah M Williams
- Department of Biology, Boston University, Boston, MA 02215, USA
| | - Lauren E Fuess
- Department of Biology, University of Texas at Arlington, Arlington, TX 76019, USA
| | | | | | | | - Julianne Welsh
- Department of Biology, Boston University, Boston, MA 02215, USA
| | - Jake Awtry
- Molecular Biology Laboratory (BB522), Program in Biochemistry & Molecular Biology, Boston University, Boston, MA 02215, USA
| | - Sarah Banic
- Molecular Biology Laboratory (BB522), Program in Biochemistry & Molecular Biology, Boston University, Boston, MA 02215, USA
| | - Cecilia Chacko
- Molecular Biology Laboratory (BB522), Program in Biochemistry & Molecular Biology, Boston University, Boston, MA 02215, USA
| | - Aarthia Chezian
- Molecular Biology Laboratory (BB522), Program in Biochemistry & Molecular Biology, Boston University, Boston, MA 02215, USA
| | - Donovan Dowers
- Molecular Biology Laboratory (BB522), Program in Biochemistry & Molecular Biology, Boston University, Boston, MA 02215, USA
| | - Felicia Estrada
- Molecular Biology Laboratory (BB522), Program in Biochemistry & Molecular Biology, Boston University, Boston, MA 02215, USA
| | - Yu-Hsuan Hsieh
- Molecular Biology Laboratory (BB522), Program in Biochemistry & Molecular Biology, Boston University, Boston, MA 02215, USA
| | - Jiawen Kang
- Molecular Biology Laboratory (BB522), Program in Biochemistry & Molecular Biology, Boston University, Boston, MA 02215, USA
| | - Wanwen Li
- Molecular Biology Laboratory (BB522), Program in Biochemistry & Molecular Biology, Boston University, Boston, MA 02215, USA
| | - Zoe Malchiodi
- Molecular Biology Laboratory (BB522), Program in Biochemistry & Molecular Biology, Boston University, Boston, MA 02215, USA
| | - John Malinowski
- Molecular Biology Laboratory (BB522), Program in Biochemistry & Molecular Biology, Boston University, Boston, MA 02215, USA
| | - Sean Matuszak
- Molecular Biology Laboratory (BB522), Program in Biochemistry & Molecular Biology, Boston University, Boston, MA 02215, USA
| | - Thomas McTigue
- Molecular Biology Laboratory (BB522), Program in Biochemistry & Molecular Biology, Boston University, Boston, MA 02215, USA
| | - David Mueller
- Molecular Biology Laboratory (BB522), Program in Biochemistry & Molecular Biology, Boston University, Boston, MA 02215, USA
| | - Brian Nguyen
- Molecular Biology Laboratory (BB522), Program in Biochemistry & Molecular Biology, Boston University, Boston, MA 02215, USA
| | - Michelle Nguyen
- Molecular Biology Laboratory (BB522), Program in Biochemistry & Molecular Biology, Boston University, Boston, MA 02215, USA
| | - Phuong Nguyen
- Molecular Biology Laboratory (BB522), Program in Biochemistry & Molecular Biology, Boston University, Boston, MA 02215, USA
| | - Sinead Nguyen
- Molecular Biology Laboratory (BB522), Program in Biochemistry & Molecular Biology, Boston University, Boston, MA 02215, USA
| | - Ndidi Njoku
- Molecular Biology Laboratory (BB522), Program in Biochemistry & Molecular Biology, Boston University, Boston, MA 02215, USA
| | - Khusbu Patel
- Molecular Biology Laboratory (BB522), Program in Biochemistry & Molecular Biology, Boston University, Boston, MA 02215, USA
| | - William Pellegrini
- Molecular Biology Laboratory (BB522), Program in Biochemistry & Molecular Biology, Boston University, Boston, MA 02215, USA
| | - Tessa Pliakas
- Molecular Biology Laboratory (BB522), Program in Biochemistry & Molecular Biology, Boston University, Boston, MA 02215, USA
| | - Deena Qadir
- Molecular Biology Laboratory (BB522), Program in Biochemistry & Molecular Biology, Boston University, Boston, MA 02215, USA
| | - Emma Ryan
- Molecular Biology Laboratory (BB522), Program in Biochemistry & Molecular Biology, Boston University, Boston, MA 02215, USA
| | - Alex Schiffer
- Molecular Biology Laboratory (BB522), Program in Biochemistry & Molecular Biology, Boston University, Boston, MA 02215, USA
| | - Amber Thiel
- Molecular Biology Laboratory (BB522), Program in Biochemistry & Molecular Biology, Boston University, Boston, MA 02215, USA
| | - Sarah A Yunes
- Molecular Biology Laboratory (BB522), Program in Biochemistry & Molecular Biology, Boston University, Boston, MA 02215, USA
| | - Kathryn E Spilios
- Molecular Biology Laboratory (BB522), Program in Biochemistry & Molecular Biology, Boston University, Boston, MA 02215, USA
| | - Jorge H Pinzón C
- Department of Biology, University of Texas at Arlington, Arlington, TX 76019, USA
| | - Laura D Mydlarz
- Department of Biology, University of Texas at Arlington, Arlington, TX 76019, USA
| | - Thomas D Gilmore
- Department of Biology, Boston University, Boston, MA 02215, USA.
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