Question: Which receptor(s) recognize lysosomal hydrolases in trans-Golgi network (TGN)?

Context:
The majority of the enzymes leave the TGN after modification with mannose-6-phosphate (M6P) residues, which are specifically recognized by M6P receptors (MPRs), ensuring their transport to the endosomal/lysosomal system.
M6P receptors play a major role in the intracellular transport of newly synthesized lysosomal enzymes in mammalian cells
Mannose 6-phosphate receptors (MPRs) are known to be shuttled between the trans-Golgi network (TGN) and endosomes, thereby several lysosomal hydrolases are delivered through the endocytic pathway into lysosomes.
Most soluble lysosomal hydrolases are sorted in the trans-Golgi network (TGN) and delivered to the lysosomes by the mannose 6-phosphate receptor (M6PR).
certain soluble lysosomal hydrolases, is sorted and trafficked to the lysosomes by sortilin.
Mannose-6-phosphate receptors (MPRs) transport lysosomal hydrolases from the trans Golgi network (TGN) to endosomes. Recently, the multi-ligand receptor sortilin has also been implicated in this transport
A shortcut to the lysosome: the mannose-6-phosphate-independent pathway
several lines of evidence suggest the existence of alternative processes of lysosomal targeting. Among them, the two that are mediated by the M6P alternative receptors, lysosomal integral membrane protein (LIMP-2) and sortilin, have gained unequivocal support.
delivery of mannose 6-phosphate receptors carrying lysosomal hydrolases from the trans-Golgi network (TGN) to the endosomal system
The cation-independent mannose 6-phosphate receptor (CI-MPR) mediates sorting of lysosomal hydrolase precursors from the TGN to endosomes.
mannose 6-phosphate (Man-6-P) recognition marker on lysosomal hydrolases.
The delivery of mannose 6-phosphate receptors carrying lysosomal hydrolases from the trans-Golgi network (TGN) to the endosomal system is mediated by selective incorporation of the receptor-hydrolase complexes into vesicular transport carriers (TCs) that are coated with clathrin and the adaptor proteins, GGA and AP-1.
Mannose-6-phosphate receptors (MPRs) transport lysosomal hydrolases from the trans Golgi network (TGN) to endosomes.
Mannose 6-phosphate receptors carry newly synthesized lysosomal hydrolases from the trans-Golgi network to endosomes, then return to the trans-Golgi network for another round of enzyme delivery.
In this way, the M6P receptors help package the hydrolases into vesicles that bud from the trans-Golgi network to deliver their contents to endosomes that ultimately will develop into mature lysosomes, where recently-delivered hydrolases may start digesting the endocyted material.
However, LS fibroblasts displayed reduced mannose 6-phosphate receptor (MPR)-mediated re-uptake of the lysosomal enzyme arylsulfatase B. In addition, endosome-to-trans Golgi network (TGN) transport of MPRs was decreased significantly, leading to higher levels of cell surface MPRs and their enrichment in enlarged, retromer-positive endosomes in OCRL-depleted HeLa cells.
The M6P groups are then recognized by two independent transmembrane M6P receptors, present in the trans-Golgi network: the cation-independent M6P receptor and/or the cation-dependent M6P receptor.
Two related mannose 6-phosphate receptors (MPRs) recognize this feature in the trans Golgi network (TGN) and deliver the hydrolases to the late endosome.
The cation-independent mannose 6-phosphate receptor (CIMPR) cycles between the trans-Golgi network (TGN) and endosomes to mediate sorting of lysosomal hydrolases.
The M6P groups are then recognized by two independent transmembrane M6P receptors, present in the trans-Golgi network: the cation-independent M6P receptor and/or the cation-dependent M6P receptor
Mannose-6-phosphate receptors (MPRs) transport lysosomal hydrolases from the trans Golgi network (TGN) to endosomes
The delivery of mannose 6-phosphate receptors carrying lysosomal hydrolases from the trans-Golgi network (TGN) to the endosomal system is mediated by selective incorporation of the receptor-hydrolase complexes into vesicular transport carriers (TCs) that are coated with clathrin and the adaptor proteins, GGA and AP-1
Mannose 6-phosphate receptors (MPRs) are known to be shuttled between the trans-Golgi network (TGN) and endosomes, thereby several lysosomal hydrolases are delivered through the endocytic pathway into lysosomes
The cation-independent mannose 6-phosphate receptor (CIMPR) cycles between the trans-Golgi network (TGN) and endosomes to mediate sorting of lysosomal hydrolases
Two related mannose 6-phosphate receptors (MPRs) recognize this feature in the trans Golgi network (TGN) and deliver the hydrolases to the late endosome

Answer: The majority of lysosomal hydrolases in trans-Golgi network (TGN) are specifically recognized by mannose 6-phosphate (M6P) receptors (MPRs), which ensure their transport to the endosomal/lysosomal system. Other receptors can also carry lysosomal hydrolases from the trans-Golgi network (TGN) to the endosomal system. These M6P alternative receptors are the lysosomal integral membrane protein (LIMP-2) and the multi-ligand receptor sortilin. These reseptors enable a mannose-6-phosphate-independent pathway from TGN to lysosomes.
Exact answer: mannose 6-phosphate receptors (MPRs)
sortilin
lysosomal integral membrane protein (LIMP-2)
cation-independent mannose 6-phosphate receptor (CI-MPR)